Belting.



L. A. SUBERS.

BELTING. APPLIQATIQN 31mm our. 17, 1910. jl w gwo V Patented Jan. 16,1912.

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LAWIXJEJIII'GIE SUBERS, 0F CLEVELAND, OHIO.

BELTING.

Specification of Letters Patent.

Patented Jan. 16, 1912.

Application filed 0ctober.17, 1910. Serial No. 587,630.

To all whom it may concern:

Be it known that I, LAWRENCE A. SUBERs, a citizen of the United States,and resident of Cleveland, in the county of Cuyahoga and State of Ohio,have inventedcertain new and useful Improvements in Belting, of

which I hereby declare the following to be a full, .clear, and exactdescription, such as will enable others skilled in the art to which.

cohesive-interwound fibrous structure, un-' woven and unbraided, inwhich the members and layers cohere 1n a. tenacious, elastic,

binding material, which may be'vulcanizable.

Of the several component layers the outer fabric layer, is composed ofat least four series of parallel, equally spaced, interwound fibrousmembers, the first and third laid series parallel to each other, and thesecond and fourth preferably at right angles to the first and third butparallel to each other and so woundthat When compressed the members ofthe third series will fill the spaces between the members of firstseries, while the members of the fourth series fill the spaces betweenthe second series, thus forming a two ply fabric layer. The second layeris composed-of parallel cords or members closely wound or laid in asubstantially longitudinal direction but at a slight angle to the sidesof the belt. By using a considerable amount of the binding or adhesivematerial 011 the inside and outside of the first layer offibrousmaterial the fabric layers are united before vulcanizing while anoutside covering of thin calendered unvulc'anized rubber completes thebelt, provided rubber is used. The belt is first constructed in tubularform and compressed or flattenedinto the form of a belt and allparts arethen vulcanized together. I

The invention is further described in the accompanying specifications,illustrated in the accompanying drawings and specifically pointed out inthe claims.

i In the accompanying drawings Figure 1 1s a plan view of a portion ofbelting showing one layer of interwound members, one layer ofsubstantially longitudinal members and coatings of rubber broken away toshow their structure; Fig. 2 is a similar view of the same in tubularform upon a mandrel before flattening, showing one layer of inter- Woundfabric members or cords and one layer of substantially longitudinalmembers or cords and the several rubber coatings in position upon themandrel on which the fabric is wound; Fig. 3 is a longitudinal sectionof Fig. 1 and Fig. 4, is a transverse section of the same.

In these views, 1 inFig. 2 is the mandrel, 2 is the heavy rubber coatingon the inside of the first fibrous layer, 3 is a layer of paralleltwisted cords each having a generally longitudinal direction of windingonly slightly deflected from a true line parallel with the axis of themandrel, 4 is a coating .of rubber thereon, 5 is a series of parallelequally spaced bands of twisted cords or other fibrous material woundupon the rubber coating, at an angle of substantially 45, 6 is a seriesof similar equally spaced bands .wound crossing the first series atapproxi- In'ately right angles or at an angle of 135 to any longitudinalsurface line in that layer, crossing this series is wound a third series7 of similar equally spaced bands parallel to the bands 5 of the firstseries and arranged so as to cover up and fill the spaces between them.At 8 is a series of similar equally spaced bands parallel to the bandsof the second series 6 and positioned to cover up and fill the spacesbetween them.' The outer force the several series of bands togetheruntil each space is filled, and a unitary two-ply fabric is formed, theedges of one series of bands engaging the edges of parallel lying seriesof bands in such a manner that the several series will not slip uponeach other and hence will not be liable to abrasion or overheating fromfriction upon each other.

The cords and bands are laid in rubber or are previously coated withrubber before winding, the essential object being that they shall bewholly embedded in rubber so as to separate them from each other, sothat they will not rub upon each other, but will be flexibly united bymeans of the binding material to form a unitary layer. These bands whichcross each other at the angles specified give both transverse andlongitudinal without injury to the fabric and will prove durable in use.

The layer 3 is composed of twisted cords which are embedded in rubberand are laid in parallel lines cohering together, and are slightlydeflected in direction from a true parallel to the axis of the mandrel,and hence the belt is more flexible and extensible than if they werelaid absolutely parallel to said axis.

As soon as completed and an unvulcanized outer coating K is added toform the required surface for engaging the pulleys, the tube iswithdrawn from the mandrel by any suitable means, or the mandrel may bea collapsible mandrel, and prior to vulcanizing it is flattened as shownin Figs. 1, 3 and 4 so as to form a belt of twice the number of layerscomposing the walls of the tube the coating of adhesive material on theinside layer causing it to adhere to itself. The completed belt is thenvulcanized.

As shown in Fig. 1 this structure provides two layers of eachclass whenflattened to form a belt, and the two layers of longitudinal deflectedcords will cross each other at a slight angle, and being united togetherby means of the binding material give great tensile strength combinedwith great flexibility and durability.

The outer layer of crossing interlaid bands cohering together in thebinding material form substantial edges, thereby protecting it fromraveling or being torn, and inclose the entire belt, while permittingfree flexing thereof and provides the capability of conforming to thecrown of the ulley.

The practicability and utllity of the device are obvious from the abovestated reasons.

It is obvious that the invention is not lim-.

ited to the exact construction and arrangement of fabric and rubberlayers described, but modifications thereof can be made withoutdeparting from the spirit of the invention and scope of the claims. Itis important however that the fabric should be elastic and inclose thetube before flattening and that it should have great tensile strengthcombined with, great flexibility in use.

It is obvious that any suitable binding adhesive material may be used,which may not be vulcanizable in its character.

Having described the invention what I claim as new and desire to secureby Letters Patent is:

I 1. In a belt, a tubular fabric and a lining therefor of adhesivevulcanizable material, and a longitudinal layer therein of paralleltwisted cords laid at a slight angle to the sides of the belt to provideflexibility thereof.

2. In a belt, a tubular layer of fibrous members crossing each otheraround the tube, a tubular layer of slightly inclined longitudinallydirected-members comprising parallel cords laid at an angle to the sidesof said belt, a tubular lining of adhesive vulcanizable material, anintervening rubber layer between the fibrous layers and a binding forsaid fibrous members of adhesive vulcanizable material.

3. In a belt, in combination, a tubular layer composed of crossingequally spaced parallel bands of fibrous material forming filled" bysucceeding bands until all spaces are covered, a tubular layercomprising parallel cohering cords laid at an angle to the sides of thebelt, the parallel cords in one side of said tubularlayer crossing thecords in the other side, and an intervening layer of rubber between saidlayers, a rubber lining and an outer coating.

4. As an article of manufacture, a belt, comprising a flattened tubecomposed of interwound groups of parallel twisted close lying cords,flattened to form selvage edges, and a flattened layer of aralleltwisted closely lying cords longitudinally directed cords laidat-anangle to said edges.

In testimony whereof, I hereunto-set my hand this 14th day of October1910. v

- LAWRENCE A. SUBERS. In presence of ERNEST MosMAN, S. L. EXLINE.

and adhering together, said parallel twisted two plies, the spacesbetween said bands.

